Someone who portrays the characteristics of a fairy in such a way to be annoying.
Someone or something that can have positive characteristics but utilizes them in order to be annoying, can be expressed as anyone who is overly attentive , extremely chipper, or has short red hair like a fairy.
Did you see the way she was acting in french class?
Yeah... she reminded me of a pixie.
Silly Rabbit trix are for kids.
Wow that commerical is so pixish